My buddy and I was trying to adjust my idle down some more yesterday. Since I turned the fuel screw some more, it was idiling around 930. Way too fast. So anyways I run out of thread on the adjustment and it was only down to around 890. I had no idea what to next.
So I get looking the linkage and everything over real good on top of the pump. I get a big alen wrench out and figure maybe I can take the throttle arm off on top of the pump and adjust it some how. Well I take the top piece off and inspect it and do not see any way to adjust it. Well the piece it sits on pops up too. I figure no big deal. So I wiggle it around and push it back down, put the top piece back on and tighten it up. So, I get in to start the truck, turn the key, it hits and dies.
First thing goes through my mind is, I ruined my pump.
So I carefully take everything back apart, I see that when the bottom piece popped up and I put it back down, I got it about a 1/4" off from where it was. So I put it back together again. Started it and it idled perfect. So I back it out of the shop, step on the go pedal and it dies.
I restart it and idle it back in the shop. I open the hood back up and everytime I move the linkage it goes from idle, to dieing, back to idle at WOT. By this time I am just at a loss, and I am starting to wonder where in the heck I am going to come up with the money for pump rebuild. So I take it all apart again, this time undoing the bottom piece and taking the spring off of it. So all I have is the shaft sticking up. I finally figured out that I had rotated that shaft to much when I wiggled it back together the second time and it was letting no fuel in the pump. So I get it back to where it will idle and run all the way up WOT.
I then put the spring and the bottom piece back on and have my buddy sit in the truck and set the idle using that shaft. Man is that thing sensitive. So I get it all set and this time put the top piece back on while it is running to make sure verything is ok. Got it back on, took it for a drive and everything worked perfect.
Well I learned a whole lot more in 3 hours yesterday about that pump than I have in the last 2 years I have owned the truck. I would have rather not learned that way, but I figured it out.
Moral of this story is: We started off installing a BHAF and it ended up with this fiasco.
Sorry for the long post, but maybe it might help someone else.
Bill
Linear Mode
